Finding the Fourth Proportional to 78,084.58, 107,757.57 and 42,275.35

Step by Step Solution

1. Step 1: Write the proportion equation
   78,084.58 : 107,757.57 = 42,275.35 : x
2. Step 2: Convert to fraction form
   78,084.58/107,757.57 = 42,275.35/x
3. Step 3: Cross multiply
   78,084.58x = 107,757.57 × 42,275.35
4. Step 4: Simplify right side
   78,084.58x = 4,555,488,986.90
5. Step 5: Solve for x
   x = 4,555,488,986.90/78,084.58
6. Step 6: Final answer
   x = 58,340.44